18 Apr
2000
18 Apr
'00
10:33 a.m.
On Tue, 18 Apr 2000, Hans Franke wrote:
Which is why we still refer to disk data structures as
'cylinders'... on the surface of a drum, that's the geometric shape
they occupy.
On my old Bendix G-15, the clock tracks were also on the drum,
allowing the use of a standard 1/4hp induction motor. I have also
seen reference to slow-cycling a drum computer by disconnecting the
motor and turning the shaft by hand.
And now they have 340M hard drives built into FlashCard memory
chips for my digital camera......
Cheerz
John
I think I heard somewhere that magnetic drums are
somewhat like core memory,
i.e. they retain their contents when shut off...
Well, Drums are just a spcial kind of disk - it's a
geometrical phenomena - a disk where all tracks have
the same length :=)